Duplex valve



(No Model.) 2S11eetsSheet L A. & F. E. TURNER. DUPLEX VALVE.

No. 440,448, Patented Nov. 11, 1890 WITNESSES: INVENTOI? dll'eml 'tof rz/af A HORNE (No Model.) 2 Sheets--Sheet 2,

A. 81; P. E. TURNER. DUPLEX VALVE.

No. 440,448? Patented Nov. 11, 1890 .mmml a ii" I H m maimmmm IIIIIIl////,

UNITED STATES PATENT OFFICE. I

' ALLEN TURNER AND FREDERICK E. TURNER, OF KANSAS CITY, MISSOURI.

DU PLEX VALVE.

SPECIFICATION forming part of Letters Patent No. 440,448, dated November 11, 1890.

Application filed June 27, 18b0, Serial No. 356,951. (No model.)

To all whom it may concern.-

Be it known that we, ALLEN TURNER and FREDERICK E. TURNER, of Kansas City, J acksoncounty, Missouri, have invented certain new and useful Improvements in Duplex ter being out off the operation of a hand-lever imparts motion to the duplex valves of our invention through aseries of sheaves and cables when applied to an elevator, allowing water from a receptacle situated on the roof, preferably, to pass through either one of a series of pipes extending from our duplex valves (according as the elevator has reached its highest or lowest point of travel) into the auxiliary cylinderconnected to a valve which controls the admission and exit of water to and from the main cylinder and forcing said connecting-valves until the water is allowed either to discharge from the main cylinder, allowing the elevator to descend, or to supply the main cylinder with water, causing the elevator to ascend, as will be readily understood.

Referring to the drawings, Figure 1 is a perspective view of our invention, showing the connection thereof with the cables. Fig. 2 is a vertical central section of the same, showing the operation of the duplex valves.

Similar letters refer to similar parts in all the figures.

A represents our invention, consisting of the cylindrical casings B B, which have the vertical passageways D D therein, the diameter of said passages being decreased about midway of their length, forming the continuous ways 0 G, which are provided with the annular enlargement E, semicircular in crossieclagtion in the interior walls of the casings The passageways C G are provided with the pipe-linings F F, which linings are pro Secured to either end of the casings B are I the hollow caps or casings L and I, the lower casing I having the opening in which the upper end of the discharge-pipe K is tapped, from which pipe K extends the vent-pipe k. The cap I is provided with the partition I, provided with the openings J J, through which operates the piston-rods G and forming a seat for the puppet-valves H H, which operate in the passages D, the valve-cups Goperating at the same time in the passages G C. The pipe M, leading from the supply-tank, is then tapped in an opening in the side of the cap L. Parallel ears or projections N extend perpendicularlyand have journaled therein the rocking shaft 0. Keyed on this shaft 0, at suitable distance from the outer side of the ears N, are the bars P, having the upper end of connecting-rods Q pivotally secured thereto, the lower ends of the same being pivotally secured to the ends of the horizontal bars R, which operate in the vertical slots 8 of the boxing S, secured upon the lower end of the piston-rods G.

The rocking lever 'l, keyed on the outer end of the rocking shaft O,has secured by means of links 10 the lower ends of cables Q to its outer ends, which cables pass around sheaves, (not shown,) which are operated bya suitable lever.

The auxiliary pipes U and V connect with the perforations in the linings F of the casings B by means of the enlargement E of the passages O, the outer ends of the said pipes connecting with an auxiliary cylinder at either end of the same, as will be readily under stood.

The normal position of our invention is as shown in Fig. 1. The weight of water from the supply-tank bearing equally on the valves G and passing through the pipesUand V enters the auxiliary cylinder attached to the main valve of the main cylinder and bears equally on either side of said auxiliary piston.

The rocking lever is thrown by suitable means in the direction shown in Fig. 2, and the horizontal or cross bar R will be raised. by

means of the rods Q, and said cross-barabnting against the upper end of the slot 8 of the boxing S Will push the valve-stem No. 1, raising the piston Gabove the perforation f of the lining F of the passage 0, cutting off the pressure of water from supply-chamber Z to auxiliary pipe U, at the same time raising the puppet-valve H, allowing the water forced by the operation of the piston in the auxiliary cyllnder to pass through the pipe U, passage D, opening J, and escape by way of dischargepipe K. The water from the chamberl instantly by its weight forces the piston G of the Valve-stem No. 2 below the perforations, and passing through the auxiliary pipe V into an auxiliary cylinder (not shown) forces the piston through toward the end opposite the entrance of the pipe V, causing the water in the auxiliary cylinder connecting with the pipe U to pass through the said pipe U, perforation f in lining F, passage-way D, opening J, and escape by way of discharge-pipe K. Immediately the lever which operates the rock-shaft O is released the water from supply-chamber Z, exerting its pressure upon piston G of valve-stem No. 1, forces the same below the perforations f in lining F and allows the equal distribution of water through pipes U and V against either side of the piston in the auxiliary cylinder, as will be readily under stood.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is 1 1. In a duplex valve, the combination of two cylinders having annular enlargements E, pipes connected with such enlargements, an induction-pipe connected with the tops of the level of the base of the said cylinder, a

rocking arm pivoted upon the top of the said cylinders, a horizontal rod passing through the slot in each of the said piston-rods and sliding vertically therein, and connecting-rods pivot-ally connected to the said horizontal rods and to the rocking lever, as described.

2. In a duplex valve, the combination of two cylinders, each of the said cylinders consistin g of two portions, an upper or restricted portion having an annular enlargement and a lower or enlarged portion, a cap-piece provided with an induction-pipe and connected with the upper ends of the restricted portion of the said cylinders, a chamber connected with an eduction-pipe and with the base of the enlarged portions of the cylinders, a piston within eachof the said cylinderscarryingacupvalve within the reduced portion anda puppet-valve within the enlarged portions thereof, the said puppet-valves closing the connection between the said cylinders and the said chamber and being of greater diameter than the cup-valves, and pipes connected with the annular enlargement of each cylinder, as described.

In testimony whereof we affix our signatures in presence of two witnesses.

ALLEN TURNER. FREDERICK E. TURNER. Witnesses:

GEO. G. THORPE, H. E. PRICE. 

